1 files changed, 0 insertions, 28 deletions
diff --git a/src/mscorlib/src/System/IO/__Error.cs b/src/mscorlib/src/System/IO/__Error.cs
index ad4972de54..955ddbec63 100644
--- a/src/mscorlib/src/System/IO/__Error.cs
+++ b/src/mscorlib/src/System/IO/__Error.cs
@@ -21,7 +21,6 @@ using Win32Native = Microsoft.Win32.Win32Native;
 using System.Text;
 using System.Globalization;
 using System.Security;
-using System.Security.Permissions;
 using System.Diagnostics.Contracts;
 
 namespace System.IO {
@@ -51,10 +50,6 @@ namespace System.IO {
         internal static void ReadNotSupported() {
             throw new NotSupportedException(Environment.GetResourceString("NotSupported_UnreadableStream"));
         }
-    
-        internal static void SeekNotSupported() {
-            throw new NotSupportedException(Environment.GetResourceString("NotSupported_UnseekableStream"));
-        }
 
         internal static void WrongAsyncResult() {
             throw new ArgumentException(Environment.GetResourceString("Arg_WrongAsyncResult"));
@@ -187,34 +182,11 @@ namespace System.IO {
                 throw new IOException(Win32Native.GetMessage(errorCode), Win32Native.MakeHRFromErrorCode(errorCode), maybeFullPath);
             }
         }
-
-        // An alternative to WinIOError with friendlier messages for drives
-        internal static void WinIODriveError(String driveName) {
-            int errorCode = Marshal.GetLastWin32Error();
-            WinIODriveError(driveName, errorCode);
-        }
-
-        internal static void WinIODriveError(String driveName, int errorCode)
-        {
-            switch (errorCode) {
-            case Win32Native.ERROR_PATH_NOT_FOUND:
-            case Win32Native.ERROR_INVALID_DRIVE:
-                throw new DriveNotFoundException(Environment.GetResourceString("IO.DriveNotFound_Drive", driveName));
-
-            default: 
-                WinIOError(errorCode, driveName);                
-                break;
-            }
-        }
     
         internal static void WriteNotSupported() {
             throw new NotSupportedException(Environment.GetResourceString("NotSupported_UnwritableStream"));
         }
 
-        internal static void WriterClosed() {
-            throw new ObjectDisposedException(null, Environment.GetResourceString("ObjectDisposed_WriterClosed"));
-        }
-
         // From WinError.h
         internal const int ERROR_FILE_NOT_FOUND = Win32Native.ERROR_FILE_NOT_FOUND;
         internal const int ERROR_PATH_NOT_FOUND = Win32Native.ERROR_PATH_NOT_FOUND;